1. Corrosion and degradation of traditional materials
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Metal corrosion
It can take several forms:
external corrosion (of buildings, engineering structures, ship hulls, underbody of automobiles, etc.), due to the action of water, humid air, the environment, seawater, etc.
internal corrosion of pipes, sewers and tanks due to the action of liquid or gaseous chemicals transported or stored.
All common metals oxidize in air, especially humid air, but the most serious problems are encountered with steels and iron, since rust is porous and will continue to corrode unless these metals are protected by a suitable coating or paint.
Metals are also attacked by acids, especially ordinary steels, and in chemical engineering we are obliged to use stainless steel, which...
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Corrosion - Aging
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Corrosion and degradation of traditional materials
References
Standardization
Standards for the characteristics of plastics and composites
French Afnor standards
- Plastiques. Détermination des propriétés en traction. Parties 1 à 5. - NF EN ISO 527 (T 51-034) - 1995 à 1997
- Composites plastiques renforcés de fibres. Détermination des propriétés de flexion....
Suppliers
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Resins (corrosion- and chemical-resistant)
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Polyesters, vinylesters
• Cray Valley (Total group) Norsodyne brand
• DSM Composites brands: Altac (vinylesters), Palatal and Synolite (polyesters)
• Scott Bader (Crystic brand polyesters)
• Reichhold (Norpol brand...
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Machinery and tools
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For contact molding
Matrasur Composites Aplicator System AB
Magnum Venus Products
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For filament winding and centrifuging
Entec Composite Machines (USA)
Mc Lean...
Abbreviations used in this article
BPA: bisphenol A
ISO: isophthalic acid-based polyester
NOV : Novolac
NPG: neopentyl glycol
Ortho: orthophthalic acid-based polyester
PES: polyester
PS: polystyrene
PU: polyurethane
PVC: polyvinyl chloride...
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